Cam tuning

[Scott Knight]

> OPTISPARK ruins it.
> No one has come up with a fix for that, that I know of.
> The optispark has a high resolution, and low resolution part to it that
> feeds directly to the ecm.  Sy just uses a "regular" distributor.
> Mybe using an electromotive DIS you could cobble something up.

I am doing some testing in the next few weeks that should tell me
whether or not you can just use a crank position signal to drive the
8051.  It seems like it should work.  I know the hi-res can be turned
off.  What I don't know is whether or not it will complain about having
equal length signals for the low res signal.  There would not be info
for the PCM to synch up the SFI to the appropriate cylinders without the
signal pattern the Opti generates.  It might be easy enough to modify
the pickup signal in a regular distributor to send the appropriate
signals for the low res.
-- 
Scott Knight  mailto:scott at scottknight.com
http://www.scottknight.com/ IRC:SS396man
'95 Black Impala SS
'94 Ducati 900SS CR
----------------------------------------------------------------------------
To unsubscribe from gmecm, send "unsubscribe gmecm" (without the quotes)
in the body of a message (not the subject) to majordomo at lists.diy-efi.org